75666475014451 has 2 divisors, whose sum is σ = 75666475014452. Its totient is φ = 75666475014450.

The previous prime is 75666475014439. The next prime is 75666475014461. The reversal of 75666475014451 is 15441057466657.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 75666475014451 - 2²³ = 75666466625843 is a prime.

It is a super-2 number, since 2×75666475014451² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 75666475014451.

It is not a weakly prime, because it can be changed into another prime (75666475014461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37833237507225 + 37833237507226.

It is an arithmetic number, because the mean of its divisors is an integer number (37833237507226).

Almost surely, 2^{75666475014451} is an apocalyptic number.

75666475014451 is a deficient number, since it is larger than the sum of its proper divisors (1).

75666475014451 is an equidigital number, since it uses as much as digits as its factorization.

75666475014451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84672000, while the sum is 61.

The spelling of 75666475014451 in words is "seventy-five trillion, six hundred sixty-six billion, four hundred seventy-five million, fourteen thousand, four hundred fifty-one".